"I think... I think maybe it's a good idea, if you're careful. B-but it's two different things, you know," Tara adds, after hesitating. "How to use your magic and when. The problems you were having at home - that was more when, and it was bad, but it didn't get glitch-bad until there was a reason."

Tara still doesn't want to tell Willow all of it. There's a reason she hasn't. But she also thinks it's probably unfair not to, and that (knowing the aliens) Willow will find out somehow.